JP5669656B2 - Sockets and lighting fixtures - Google Patents

Description

  The present invention relates to, for example, a socket and a lighting fixture for connecting straight tube LED lamps in series.

  Recently, straight tube LED lamps are being sold as an alternative to straight tube fluorescent lamps, but many of them employ the same G13 base as conventional straight tube fluorescent lamps. Therefore, it becomes possible to attach to the conventional fluorescent lamp lighting fixture. However, many straight tube LED lamps are designated as usable (attachable) lighting fixtures (for example, for electronic ballasts, glow ballasts, etc.). Therefore, there is a possibility that the user may mistakenly install the lighting fixture that cannot be used, and the installed straight tube LED lamp or the ballast may break down.

  In order to prevent such a mistake, the standard of the straight tube LED lamp provided with the novel nozzle | cap | die different from the conventional G13 nozzle | cap | die is examined ((Corporation) Japan Light Bulb Industry Association Standard JEL801, JEL907).

  Conventionally, for a lighting fixture in which at least two straight tube fluorescent lamps are arranged in a straight line, a structure having a structure for connecting to the lighting fixture is arranged, and existing lamp sockets are attached to both sides of the part (For example, Patent Document 1).

  In addition, there is a lamp socket having a structure in which a straight tube fluorescent lamp can be attached to both surfaces of a lamp socket body (for example, Patent Document 2).

JP-A-10-2223015 JP 2005-050729 A

  In Patent Document 1, it is attached to a component to be connected using an existing lamp socket. However, the thickness of the component to be connected becomes longer in the longitudinal direction of the lighting fixture, and the design surface is inferior. There is a problem in that the interval of light is widened and light unevenness occurs. Moreover, the attachment to a lighting fixture has the subject that it spends time for an assembly | attachment in order to attach two existing lamp sockets, after attaching the component for connection to a lighting fixture.

  In Patent Document 2, since it is a dedicated lamp socket specializing in lighting fixtures in which at least two straight tube fluorescent lamps are arranged in a straight line, it is necessary to develop a dedicated lamp socket, and the development cost is high. There is a problem that arises.

  The present invention has been made to solve the above-described problems, and it is possible to reduce the connecting portion of the lamp and reduce the development cost.

  A socket according to the present invention is a straight tube lamp having ends on both sides, and has a grounding base that is a base for grounding at one end and a power supply for power feeding at the other end. In a socket for connecting a straight tube lamp having a base for connecting in series, the front part has a front part and a rear part facing the front part, and the feeding base insertion hole into which the feeding base is inserted is the front part. And a groove portion provided on the rear surface portion and provided with a bottom portion and a pair of side wall portions, wherein the grounding base is inserted, and a locking portion for locking the inserted grounding base A contact portion that comes into contact with the grounding cap that is housed in the groove portion and is locked to the locking portion, and a grounding fitting that is connected to the contact portion and arranged at the bottom portion of the groove portion. It is characterized by providing.

  A socket according to the present invention is a straight tube lamp having ends on both sides, and has a grounding base that is a base for grounding at one end and a power supply for power feeding at the other end. In a socket for connecting a straight tube lamp having a base for connecting in series, the front part has a front part and a rear part facing the front part, and the feeding base insertion hole into which the feeding base is inserted is the front part. And a groove portion provided on the rear surface portion and provided with a bottom portion and a pair of side wall portions, wherein the grounding base is inserted, and a locking portion for locking the inserted grounding base A contact portion that comes into contact with the grounding cap that is housed in the groove portion and is locked to the locking portion, and a grounding fitting that is connected to the contact portion and arranged at the bottom portion of the groove portion. So that the connecting part of the straight tube lamp is thin. Rukoto can, it is possible to improve the design of the luminaire, it is possible to reduce development costs.

It is a perspective view of the lighting fixture 10 which concerns on Embodiment 1, (a) is a whole perspective view of the lighting fixture 10, (b) is the elements on larger scale of the connection part of the straight tube | pipe LED lamp 20. FIG. It is a perspective view of the straight tube | pipe LED lamp 20 which concerns on Embodiment 1, (a) is a whole perspective view of the straight tube | pipe LED lamp 20, (b) is the elements on larger scale of the earth | ground side base 21, (c) is a straight view. FIG. 3 is a partially enlarged perspective view of a power supply side base 23 of a tube LED lamp 20. 2 is an exploded perspective view of a connection socket 30 according to Embodiment 1. FIG. 3 is an overall perspective view seen from the rear surface portion 46 side of the connection socket 30 according to Embodiment 1. FIG. It is a 5th page figure of the connection socket 30 which concerns on Embodiment 1, (a) is a front view, (b) is a side view, (c) is a rear view, (d) is a top view, (e) is a bottom view. It is. 4A and 4B are four side views of the back cover 40 according to the first embodiment, where FIG. 5A is a view of the rear surface portion 46 viewed from the inside of the back cover 40, FIG. 5B is a side view, and FIG. FIG. 4D is a plan view seen from above. 3 is an exploded perspective view of a power supply side socket 101 used in a lighting fixture for one lamp of a straight tube LED lamp 20. FIG. It is a disassembled perspective view of the connection socket 30a which concerns on Embodiment 2. FIG.

Embodiment 1 FIG.
FIG. 1 is a perspective view of a lighting fixture 10 according to the present embodiment, where (a) is an overall perspective view of the lighting fixture 10, and (b) is a partially enlarged perspective view of a connecting portion of a straight tube LED lamp 20. . 2A and 2B are perspective views of the straight tube LED lamp 20, wherein FIG. 2A is an overall perspective view of the straight tube LED lamp 20, FIG. 2B is a partially enlarged perspective view of the ground side cap 21, and FIG. FIG. 4 is a partially enlarged perspective view of a power supply side base 23 of an LED lamp 20.

  The whole structure of the lighting fixture 10 and straight tube | pipe LED lamp 20 which concern on this Embodiment is demonstrated using FIG.1 and FIG.2.

  As shown to Fig.1 (a), the lighting fixture 10 is provided with the fixture main body 11, the straight tube | pipe LED lamp 20 (straight tube type lamp), and the connection socket 30 (a socket, a socket for straight tube | pipe LED lamps). The straight tube LED lamp 20 is detachably attached to the connection socket 30.

  The luminaire 10 is a luminaire in which two straight tube LED lamps 20 are connected in series. The lighting fixture 10 is a lighting fixture in which two straight tube LED lamps 20 connected in series are arranged in parallel. That is, the luminaire 10 is a luminaire on which four straight tube LED lamps 20 are mounted.

  The straight tube LED lamp 20 attached to the lighting fixture 10 will be described with reference to FIG. As shown in FIG. 2 (a), the straight tube LED lamp 20 has ends on both sides, a grounding base 21 (grounding base) that is a base for grounding at one end, and the other Is provided with a power supply side base 23 (power supply base) for power supply. The straight tube LED lamp 20 includes a cylindrical case 20a, and a long LED module (not shown) is accommodated in the case 20a.

  The straight tube LED lamp 20 according to the present embodiment is a straight tube LED lamp having three kinds of electrodes in one lamp and two kinds of cap shapes.

  Some straight tube LED lamp caps use a straight tube fluorescent lamp cap G13. The straight tube LED lamp 20 according to the present embodiment is different from the straight tube LED lamp using the base G13, and has a cylindrical (cylindrical) case 20a (light emitting portion) and one end side in the longitudinal direction of the case 20a. And a power supply side base 23 provided on the other end side in the longitudinal direction of the case 20a (L-type pin base GX16-t in JEL801).

  The ground side base 21 includes a ground pin 22 (conductive pin) that is a single electrode at the center of the base (a circular portion 21c at one end of the straight tube LED lamp 20). The ground pin 22 includes a cylindrical portion 22a that is a circular column extending in the lamp axis direction, and an elliptical portion 22b. The columnar portion 22a is a column protruding from the approximate center of the circular portion 22c, and includes an elliptical portion 22b that is an elliptic cylinder at the tip. The ellipse 22b has a major axis L1 and a minor axis L2. The purpose of the ground pin 22 is to connect the metal part of the straight tube LED lamp 20 and the lighting fixture 10 to ground.

  The minor axis L2 of the elliptical part 22b is larger than the diameter of the circle in the cross section of the cylindrical part 22a. Since the elliptical part 22b (projection part) is larger than the cross section of the cylindrical part 22a, it is provided so as to protrude from the outer periphery of the cylindrical part 22a. The ground pin 22 is connected to a metal part such as a heat radiating fin (not shown) of the LED module housed inside the straight tube LED lamp 20.

  The power supply side base 23 includes a lamp hooking portion 25 that is a convex portion at the center of the end face of the base (the circular portion 23c at the other end of the straight tube LED lamp 20). The lamp hooking portion 25 is a part for preventing the fall from rising from the end surface to the convex portion. It has a pair of L-shaped conductive pins on the upper surface of the lamp hooking portion 25 and is intended to supply power to the straight tube LED lamp.

  The power supply side base 23 includes a pair of power supply pins 24 that are two-pole electrodes extending from the lamp hooking portion 25 in the lamp axis direction. The power supply pins 24 are a pair of L-shaped conductive pins provided on the surface of the circular portion 23c. The power supply pins 24 are L-shaped and have a shaft portion 24a extending in the lamp axial direction and perpendicular to the tip portion of the shaft portion 24a. And a retaining portion 24b that extends.

  The power supply pin 24 is connected to a power supply device provided in the lighting fixture 10 and supplies power to the LED module housed in the straight tube LED lamp 20. The power supply pin 24 is intended to supply power to the straight tube LED lamp.

  As shown in FIG. 1B, the connection socket 30 includes a main body 31 and a back cover 40. The power supply side base 23 is detachably attached to the main body 31, and the ground side base 21 is detachably attached to the back cover 40. Thereby, the two straight tube | pipe LED lamps 20 can be connected in series.

  FIG. 3 is an exploded perspective view of the connection socket 30 according to the present embodiment. FIG. 4 is an overall perspective view seen from the rear surface 46 side of the connection socket 30 according to the present embodiment. 5A and 5B are five views of the connection socket 30 according to the present embodiment, in which FIG. 5A is a front view, FIG. 5B is a side view, FIG. 5C is a rear view, and FIG. ) Is a bottom view. 6A and 6B are four views of the back cover 40 according to the present embodiment, in which FIG. 6A is a view of the rear surface portion 46 viewed from the inside of the back cover 40, FIG. 6B is a side view, and FIG. The front view of the surface part 46, (d) is a plan view seen from above.

  The structure of the connection socket 30 according to the present embodiment will be described with reference to FIGS.

  As shown in FIG. 3, the connection socket 30 includes a main body 31, a rotor 34 accommodated in the main body 31, a pair of power supply fittings 35 also accommodated in the main body 31, and a back cover that closes the back surface of the main body 31. 40 and a grounding fitting 50 attached to the back cover 40.

  As shown in FIG. 4, the main body 31 and the back cover 40 are combined to form one outer portion 103. The outer portion 103 shown in FIG. 4 has a front surface portion 36 and a rear surface portion 46 facing the front surface portion 36. The front surface portion 36 includes an opening 32 (power supply base insertion hole) (see FIG. 3) into which the power supply side base 23 is inserted.

  Hereinafter, in order to simplify the description, as shown in FIG. 3, when the straight tube LED lamp 20 is attached to the connection socket 30, the appliance attachment portion 39 side attached to the appliance body 11 in the connection socket 30 is the lower side. The side that is the light irradiation direction is the upper side.

  The main body 31 is formed of a thermoplastic resin insulating material such as polycarbonate or polybutylene terephthalate. The main body 31 includes an opening 32 in the front surface portion 36. The main body 31 houses a rotor 34 and a pair of power supply fittings 35 inside the main body on the back side of the front surface portion 36. Further, the main body 31 includes a fitting receiving portion 33 for fitting and coupling a claw portion 41 of the back cover 40 described later.

  The rotor 34 is disposed so as to be connected to the opening 32, and has a mechanism that rotates the inserted power supply pin 24 when the power supply pin 24 is inserted. The power supply fitting 35 is disposed at a position where the power supply pin 24 inserted into the rotor 34 is rotated by 90 degrees and in contact with the outer side surface of the shaft portion 24a.

  Moreover, as shown in FIG.5 (e), the bottom face part 37 of the lower side of the main body 31 is equipped with the electric wire insertion hole 38 into which an electric wire is inserted. The power supply fitting 35 includes a quick connection terminal portion 35 a connected to an electric wire inserted into the main body 31 on the lower side (the bottom surface portion 37 side).

  The electric wire inserted into the electric wire insertion hole 38 is connected to the quick connection terminal portion 35 a of the power supply fitting 35. That is, the power supply fitting 35 is connected to a not-shown electric wire inserted from the electric wire insertion hole 38 of the bottom surface portion 37 of the main body 31, and is connected to a power output portion such as an electronic ballast and is a straight pipe inserted from the opening 32. The power supply side cap 23 (power supply pin 24) of the LED lamp 20 is connected. As a result, power is supplied to the straight tube LED lamp 20 via the power supply pin 24.

  The back cover 40 is formed of a thermoplastic resin insulating material, such as polycarbonate or polybutylene terephthalate. The back cover 40 includes a claw portion 41 that fits into the fitting receiving portion 33 of the main body 31, and a groove portion 42 formed in the rear surface portion 46.

  The groove portion 42 is provided in the vertical direction of the rear surface portion 46. The groove part 42 includes a groove bottom part 47 (bottom part) and a pair of side wall parts 48. The groove part 42 is provided with a lamp holding part 43 (locking part) for inserting the grounding side base 21 and locking the inserted grounding side base 21.

  The lamp holding portion 43 is a pair of notches 43a (see FIG. 6C) formed in the pair of side wall portions 48 of the groove portion 42. The pair of notches 43a has an elliptical shape of the straight tube LED lamp 20. The part 22b is fitted.

  The ground metal fitting 50 is housed in the groove 42. That is, the ground metal fitting 50 is housed in the groove portion 42 and does not protrude from the surface of the rear surface portion 46 as shown in FIG.

  The ground metal fitting 50 is provided at a position corresponding to the lamp holding portion 43 of the groove portion 42 and includes a clamping portion 51 (contact portion) that contacts the ground side base 21 held (locked) by the lamp holding portion 43. The clamping part 51 is formed of a conductive metal. Further, the grounding metal 50 includes a grounding plate 54 that is a metal plate that is connected to the sandwiching portion 51 and is disposed on the groove bottom 47 of the groove 42. The sandwiching portion 51 and the ground plate 54 may be integrally formed or may be separate parts.

  As shown in FIG. 3, a grounding portion 53 a formed by being bent at a substantially right angle in the lamp axis direction at the lower end portion of the grounding metal 50, and a screw for connecting the grounding portion 53 a and the instrument body 11. And a grounding hole 53b for attaching (not shown). The grounding metal 50 is electrically connected to the instrument body 11 by connecting the grounding portion 53 a to the instrument body 11.

  As shown in FIG. 6C, the groove portion 42 has a groove width L3, an upper width of the groove portion L4, and a lamp holding portion 43 portion (a pair of notches 43a) having a width (long diameter) of L6. And Further, as shown in FIG. 5C, the width (major diameter) of the clamping part 51 arranged in the lamp holding part 43 is L5.

  As shown in FIGS. 5C and 6, the shape of the groove 42 is such that the groove width L4 at the upper end of the groove 42 is slightly larger (wider) than the width L3 of the parallel portion of the groove 42 and is directed downward. Gradually approaching L3, the edges of the side walls on both sides are formed to be substantially parallel with the groove width being L3. A pair of cutouts 43a is formed in the lamp holding portion 43, and the width of the pair of cutouts 43a (the width of the major axis of the lamp holding portion 43) is L6.

  A method of attaching the ground pin 22 to the connection socket 30 will be described. As shown in FIG. 5C, the ground pin 22 has a groove opening 49 formed at the upper end of the groove 42 in a direction (the state of S1) in which the major axis direction of the elliptical part 22b is aligned with the direction of the groove 42. Is inserted from. Here, since the width L4 of the groove opening 49 is slightly wider, the side wall 48 of the groove 42 does not get in the way when the ground pin 22 is inserted, and the workability is good.

  When the elliptical part 22 b comes to the position of the lamp holding part 43, the operator rotates the straight tube LED lamp 20 by 90 degrees at the position of the lamp holding part 43. By rotating 90 degrees, the elliptical part 22b is in a state fitted in the pair of notches 43a of the lamp holding part 43 (state of S2). Thereby, the ground pin 22 of the straight tube LED lamp 20 is fixed without moving up and down.

  The width L3 of the groove portion 42 is formed to be larger than the short diameter L2 of the elliptical portion 22b of the ground pin 22 and smaller than the long diameter L1 of the elliptical portion 22b. That is, the relationship is L2 <L3 <L1.

  The width L6 of the lamp holding portion 43 that holds the straight tube LED lamp 20 is larger than the major axis L1 of the elliptical portion 22b. That is, L1 <L6. The clamping part 51 is a pair of contact pieces having a spring property, and as shown in FIG. 5, the width L5 in the state of being arranged in the lamp holding part 43 is preferably formed slightly smaller than L1. That is, the relationship is L5 <L1 <L6.

  With the relationship of L5 <L1 <L6, when the elliptical portion 22b is rotated 90 degrees in the lamp holding portion 43 (the clamping portion 51) to be in the state of S2, the clamping portion 51 is elliptical due to the spring property. Since the outer periphery of 22b is clamped while being pressed, the ground pin 22 and the ground metal fitting 50 can be reliably connected.

  The ground plate 54 extends downward along the groove 42 from a portion connected to the sandwiching portion 51. The ground plate 54 is attached so as to contact the groove bottom 47.

  As shown in FIGS. 5C and 6C, the groove portion 42 fixes the ground plate 54 (grounding metal fitting 50) to the groove bottom portion 47 at a position below the lamp holding portion 43 of the groove bottom portion 47. A fixing projection 44 is provided. In addition, as shown in FIG. 3, the ground plate 54 includes a fixed receiving portion 52 at a position corresponding to the fixed protrusion 44.

  When attaching the grounding metal fitting 50 to the groove part 42, the clamping part 51 is fitted into the lamp holding part 43, and the fixing protrusion 44 is fitted into the fixed receiving part 52 of the grounding plate 54. As shown in FIG. 6 (d), the fixed protrusion 44 includes a fixed shaft 44a extending from the groove bottom 47 in the lamp axis direction, and a conical joint 44b extending from the tip of the fixed shaft 44a in the lamp shaft direction. Consists of. Further, the fixed receiving portion 52 of the ground plate 54 is a hole smaller than the bottom surface of the joint portion 44 b of the fixed protrusion 44. By forming the fixed receiving portion 52 and the fixed protrusion 44 in such a shape, the grounding metal fitting 50 is fixed to the groove portion 42 and thus is not easily detached.

  As shown in FIGS. 6B and 6D, the back cover 40 includes a rotating shaft 45 that supports the rotor 34 disposed inside the connection socket 30 and rotates the rotor 34.

  The ground metal fitting 50 is provided inside the groove portion 42 of the back cover 40, and includes a sandwiching portion 51 that sandwiches and connects the side surface of the elliptical portion 22 b of the ground pin 22 at the lamp holding portion 43 portion of the groove portion 42, and a groove bottom portion 47. It has a fixed receiving portion 52 which is a hole smaller than the bottom surface of the joint portion 44b of the fixed protrusion 44, and a grounding hole 53b for connecting to the fixture body 11 of the lighting fixture 10 (installed location).

  The grounding metal fitting 50 is fixed in the groove portion 42 of the back cover 40 by inserting the fixing protrusion 44 into the fixed receiving portion 52. In the present embodiment, the grounding hole 53b is intended to be grounded via the instrument body 11 by tightening with a screw. However, the grounding portion 53a is configured as a quick-connect terminal to connect a grounding wire. It is good also as a structure. Moreover, although the grounding metal 50 is exposed to the outside of the connection socket 30, since it is grounded via the fixture body 11 of the lighting fixture 10, there is no problem even if the grounding metal 50 is touched when the lamp is attached.

  As described above, the connection socket 30 according to the present embodiment does not require the ground pin 22 to be inserted into the connection socket 30. That is, the groove bottom 47 has no opening, and the ground pin 22 inserted into the groove 42 is not inserted into the connection socket 30. As a result, the ground pin 22 can be connected without affecting the configuration corresponding to the power supply pin 24 housed in the connection socket 30. Like a connecting socket for a straight tube fluorescent lamp, the lamp pin of the straight tube fluorescent lamp becomes a charging part and therefore needs to be housed inside the socket, so that the thickness of the connecting portion is not increased.

  The height of the groove 42 of the groove portion 42 of the back cover 40 can be made equal to or less than the length of the ground pin 22, which leads to downsizing of the lighting fixture 10 and also reduces the gap between the straight tube LED lamps 20. Is reduced.

  FIG. 7 is an exploded perspective view of the power supply side socket 101 used in a lighting fixture for one lamp of the straight tube LED lamp 20. FIG. 7 is a diagram corresponding to FIG. 3, and the same reference numerals are given to the same components as those in FIG. 3 and the description thereof is omitted.

  The power supply side socket 101 includes a main body 31, a rotor 34, a pair of power supply fittings 35, and a power supply side socket back cover 102. The power supply-side socket back cover 102 includes a rear surface portion 46 and a claw portion 41. The rear surface portion 46 of the power supply side socket back cover 102 does not include the groove portion 42, the lamp holding portion 43, and the fixing protrusion 44 of the back cover 40 according to the present embodiment.

  That is, the connection socket 30 according to the present embodiment can be manufactured by removing the power supply side socket back cover 102 of the power supply side socket 101 and attaching the back cover 40 to the main body 31. This is because, as described above, the connection socket 30 according to the present embodiment can connect the ground pin 22 without affecting the configuration of connecting the power supply pins inside the connection socket 30. .

  Since the connection socket 30 and the power supply side socket 101 can use the main body 31, the rotor 34, the pair of power supply fittings 35 and the like in common, the development cost can be reduced, the development period can be shortened, and the inventory can be reduced. It also leads to improved management convenience and storage space.

  The straight tube LED lamp 20 attached to the lighting fixture 10 according to the present embodiment has three electrodes, one end has a one-pole ground pin 22 for grounding, and the other has It is characterized by having a two-pole power supply pin 24 for power supply. Moreover, the lamp socket (connection socket 30) according to the present embodiment is used in the lighting fixture 10 in which at least two straight tube LED lamps 20 are arranged in a straight line, and the straight tube LED lamps 20 are opposed to each other. Connect the base.

  The lamp socket (connecting socket 30) according to the present embodiment has an insulating property, a main body 31 having an opening 32 in the front surface 36, and the power supply pin 24 of the straight tube LED lamp 20 provided in the opening 32. And a pair of power supply fittings 35 that are in contact with the power supply pins 24 inserted into the rotor 34 and disposed inside the main body. The lamp socket (connecting socket 30) has an insulating property, and has a claw portion 41 for fitting with a fitting receiving portion 33 provided on the main body 31 on the main body 31 side, and a ground surface on the rear surface portion 46. A back cover 40 having a groove portion 42 into which the pin 22 can be inserted, and a grounding metal piece 50 sandwiching the ground pin 22 inserted into the groove portion 42 of the back cover 40 and disposed on the groove portion 42 side of the back cover 40 are provided.

  Since the lamp socket (connection socket 30) according to the present embodiment has the above-described configuration, the lighting fixture 10 can be made thin. Moreover, since the main body 31, the rotor 34, and the power supply fitting 35 of the power supply side socket 101 used for the lighting fixture to which one straight tube LED lamp 20 is mounted can be diverted, the development cost can be reduced. .

Embodiment 2. FIG.
In the present embodiment, a connection socket 30a including a grounding metal 60 having a shape different from that of the grounding metal 50 of the first embodiment will be described.

  FIG. 8 is an exploded perspective view of the connection socket 30a according to the present embodiment. FIG. 8 is a diagram corresponding to FIG. 3, and the same reference numerals are given to the same components as those in FIG. 3 and the description thereof is omitted.

  As shown in FIG. 8, the ground metal fitting 60 is disposed at a position corresponding to the lamp holding portion 43 of the groove portion 42, and is a spring receiving portion that comes into contact with the ground side base 21 held (locked) by the lamp holding portion 43. 64 (contact part). The spring receiving portion 64 is formed of a conductive metal. Further, the grounding metal 60 includes a grounding plate 54 formed continuously with the spring receiving portion 64. The spring receiving portion 64 and the ground plate 54 may be integrally formed or may be separate parts.

  The spring receiving portion 64 is a spring plate having elasticity that is disposed in a region corresponding to a position where the lamp holding portion 43 (the pair of notches 43 a) is formed in the region of the groove bottom portion 47. When the elliptical portion 22b of the ground pin 22 is fitted into the lamp holding portion 43, the spring receiving portion 64 is pressed against the end surface (front surface) of the elliptical portion 22b by springiness (elasticity) and reliably contacts the elliptical portion 22b. .

  The grounding metal 60 has a spring receiving portion 64 that has spring properties and is movable in the lamp axial direction at the lamp holding portion 43 of the back cover 40. The spring receiving portion 64 is connected in surface contact with the end face (front surface) of the elliptical portion 22b of the ground pin 22 of the straight tube LED lamp 20.

  According to the connection socket 30a according to the present embodiment, the spring receiving portion 64, which is the contact portion of the grounding metal 60, can be moved in the lamp axial direction due to the spring property, so that variations in the lamp length of the straight tube LED lamp 20 are absorbed. can do.

  Although Embodiments 1 and 2 have been described above, these two embodiments may be combined. Alternatively, one of these embodiments may be partially implemented. Alternatively, these two embodiments may be partially combined.

  DESCRIPTION OF SYMBOLS 10 Lighting fixture, 11 Appliance main body, 20 Straight tube LED lamp, 20a Case, 21 Ground side base, 21c Circle part, 22 Ground pin, 22a Cylindrical part, 22b Ellipse part, 23 Feed side base, 23c Circle part, 24 Feed pin , 24a Shaft portion, 24b Retaining portion, 25 Lamp hooking portion, 30, 30a Connection socket, 31 Main body, 32 Opening portion, 33 Fitting receiving portion, 34 Rotor, 35 Power supply fitting, 35a Fast connection terminal portion, 36 Front Part, 37 bottom face part, 38 electric wire insertion hole, 39 instrument mounting part, 40 back cover, 41 claw part, 42 groove part, 43 lamp holding part, 43a pair of notches, 44 fixing projection, 44a fixing shaft, 44b joining part, 45 Rotating shaft, 46 Rear surface part, 47 Groove bottom part, 48 Side wall part, 49 Groove part opening, 50 Grounding metal fitting, 51 Holding part, 52 Fixed receiving part, 53a Grounding part, 53b Grounding hole, 54 Grounding plate, 60 Grounding metal fitting, 64 Spring receiving part, 101 Power supply side socket, 102 Power supply side socket back cover, 103 Outer part

Claims (6)

A straight tube lamp having ends on both sides, a straight tube lamp having a grounding base that is a base for grounding at one end and a feeding base for power feeding at the other end In the socket that connects the lamps in series,
An outer portion having a front surface portion and a rear surface portion facing the front surface portion, and having a power supply base insertion hole into which the power supply base is inserted;
A groove portion provided on the rear surface portion and provided with a bottom portion and a pair of side wall portions, the groove portion including the grounding base inserted therein and a locking portion for locking the inserted grounding base,
A contact portion that is housed in the groove portion and contacts the grounding base that is locked to the locking portion;
A socket comprising: a grounding fitting connected to the contact portion and disposed at the bottom portion of the groove portion. The grounding base includes a single-pole grounding pin,
The ground pin has a protrusion at the tip,
The said latching | locking part is a pair of notch formed in the said one pair of side wall part of the said groove part, Comprising: It has a pair of notch by which the said projection part is fitted. socket.   The socket according to claim 2, wherein the contact portions are a pair of contact pieces that sandwich the protrusions fitted into the pair of cutouts. The contact portion is a spring plate having elasticity that is disposed in a region corresponding to a position where the pair of cutouts are formed in the bottom region.
3. The socket according to claim 2, wherein the spring plate is pressed against the protrusion by elasticity and contacts the protrusion when the protrusion is fitted into the pair of cutouts.   The socket according to claim 1, wherein the outer portion is a back cover from which the rear surface portion is removable. A socket according to any one of claims 1 to 5;
An instrument body to which the socket is attached;
A lighting apparatus comprising: a power supply device that supplies power to a straight tube lamp connected by the socket.

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